CN111543039A

CN111543039A - Screen sounding method and terminal device

Info

Publication number: CN111543039A
Application number: CN201880078674.XA
Authority: CN
Inventors: 叶千峰; 李芳庆; 张洵; 黎椿键
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-04
Filing date: 2018-04-04
Publication date: 2020-08-14
Also published as: WO2019191953A1

Abstract

The embodiment of the application discloses a screen sounding method and terminal equipment, wherein the terminal equipment comprises a screen assembly, at least one vibration source, an equipment middle frame, a circuit main board and a back cover; wherein the screen assembly is installed on the front surface of the equipment middle frame, the circuit main board is installed on the front surface of the equipment middle frame and is positioned between the screen assembly and the equipment middle frame, and the back cover is installed on the back surface of the equipment middle frame; the vibration source is installed the back of screen subassembly, the vibration source is used for driving the screen subassembly is in the perpendicular to the direction of screen subassembly vibrates and the sound production. The embodiment of the application solves the problems that the volume of screen sound production is small and the tone quality is poor.

Description

Screen sounding method and terminal device

Technical Field

The embodiment of the application relates to the technical field of acoustics, in particular to a screen sounding method and terminal equipment.

Background

Traditional terminal equipment such as mobile phones and tablet computers generally adopt a moving coil loudspeaker to realize sound production of a receiver. However, this kind of terminal device needs to set up the sound hole in the front of the screen subassembly, and is not suitable for the development trend of present large-screen terminal or full screen terminal.

In order to be matched with a large-screen terminal or a full-screen terminal, one scheme is to adopt a screen sounding technology to realize the sounding of a receiver. Taking a mobile phone as an example, the piezoelectric ceramic is fixed on the middle frame of the mobile phone, and when the piezoelectric ceramic vibrates, the whole mobile phone is driven to vibrate and sound through the middle frame of the mobile phone. However, in such a structure, the mass of the whole mobile phone is large and the mass distribution is uneven, which may cause the problems of small sound volume and poor sound quality.

Disclosure of Invention

The technical problem solved by the embodiment of the application is to provide a screen sounding method and a terminal device, and solve the problems of small volume and poor tone quality of screen sounding.

Therefore, the technical scheme for solving the technical problem in the embodiment of the application is as follows:

in a first aspect, an embodiment of the present application provides a terminal device, including: the device comprises a screen assembly, at least one vibration source, a device middle frame, a circuit main board and a back cover;

wherein the screen assembly is installed on the front surface of the equipment middle frame, the circuit main board is installed on the front surface of the equipment middle frame and is positioned between the screen assembly and the equipment middle frame, and the back cover is installed on the back surface of the equipment middle frame; the vibration source is installed the back of screen subassembly, the vibration source is used for driving the screen subassembly is in the perpendicular to the direction of screen subassembly vibrates and the sound production.

Therefore, the vibration source can drive the screen assembly to vibrate and sound, the terminal equipment cannot be driven to vibrate or the vibration intensity of the terminal equipment is weak, and the problems of small volume and poor tone quality of screen sound production are solved.

In some possible designs, the screen assembly and the device middle frame are connected by a connecting assembly for impeding the transmission of vibrations between the screen assembly and the device middle frame. Thereby can avoid driving as far as possible the equipment center vibration further improves the tone quality and the volume of screen sound production.

In some possible designs, the connection assembly includes: a stretchable adhesive; the side face of the screen component is connected with the equipment middle frame through the telescopic adhesive.

In some possible designs, the connection assembly includes: an elastic support member;

the elastic support is clamped between the back surface of the screen assembly and the equipment middle frame.

In some possible designs, the resilient support comprises one or more of the following:

foam, spring, rubber support piece, and elasticity rubber band support piece.

In some possible designs, at least one hole is arranged on the equipment middle frame, one end of the vibration source is arranged on the back surface of the screen assembly, and the other end of the vibration source is arranged in the hole. Therefore, the thickness of the mobile phone can be reduced, and the light and thin design can be realized.

In some possible designs, the circuit board includes: a drive circuit;

the driving circuit is connected with the vibration source through a flexible connector. This flexible connection also serves to transmit no vibrations.

In some possible designs, the vibration source includes one or more of the following: piezoelectric ceramics, vibration motors, and vibration exciters.

In a second aspect, an embodiment of the present application provides a method for generating a screen sound, where the method includes:

the driving circuit generates a first driving signal;

the driving circuit sends the first driving signal to a vibration source to drive the vibration source to vibrate;

the vibration source drives the screen assembly to vibrate and sound in the direction perpendicular to the screen assembly.

In some possible designs, the method further comprises: the driving circuit obtains single-channel or multi-channel first audio data, generates a second driving signal according to the first audio data, and sends the second driving signal to one or more moving coil loudspeakers to drive the moving coil loudspeakers to sound;

the drive circuit generates a first drive signal comprising: the driving circuit obtains second audio data of single track or multiple tracks, and generates the first driving signal according to the second audio data.

Therefore, when the same audio data is played, the single-channel or multi-channel sound production can be realized through one or more moving coil loudspeakers in a loudspeaker mode or other modes, and different single-channel or multi-channel sound production can be realized through the screen assembly, so that the multi-channel sound production is realized, and the stereoscopic impression of sound effect is enhanced.

Yet another aspect of the present application provides a computer storage medium comprising computer instructions which, when run on a terminal device, cause the terminal device to perform the method of the above-mentioned aspects.

A further aspect of the application provides a computer program product which, when run on a computer, causes the computer to perform the method of the above aspects.

According to the technical scheme, in the embodiment of the application, the terminal equipment comprises the screen assembly and at least one vibration source, wherein the vibration source is installed on the back of the screen assembly, and when the vibration source vibrates, the screen assembly can be driven to vibrate and sound in the direction perpendicular to the screen assembly. It is thus clear that, in this application embodiment because the vibration source can drive screen subassembly vibration and sound production, and can not drive the vibration intensity of terminal equipment complete machine vibration or terminal equipment complete machine is more weak, and the screen subassembly for terminal equipment not only the quality is less but also mass distribution is even, has consequently solved the less and relatively poor problem of tone quality of the volume of screen sound production.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an exploded perspective view of a terminal device according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view taken in the direction A-A of FIG. 1;

fig. 3 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure;

FIG. 4 is a schematic flow chart diagram illustrating one embodiment of a method provided by an embodiment of the present application;

fig. 5 is a schematic structural diagram of another driving circuit provided in the embodiment of the present application;

FIG. 6 is a schematic flow chart diagram illustrating another method embodiment provided by embodiments of the present application;

fig. 7 is a front view and left and right side views of a mobile phone according to an embodiment of the present disclosure;

fig. 8 is a rear view of a mobile phone according to an embodiment of the present application;

FIG. 9 is a top side and bottom side view of a handset according to an embodiment of the present application;

fig. 10 is a schematic view of a user interface provided in an embodiment of the present application.

Detailed Description

Conventional terminal devices such as mobile phones and tablet computers are generally provided with two moving coil speakers. Taking a mobile phone as an example, one of the moving coil speakers is arranged at the upper part of the mobile phone and produces sound through a sound outlet hole arranged on the front side of the screen component, and the other moving coil speaker is arranged at the lower part of the mobile phone and produces sound through a sound outlet hole arranged on the bottom side of the mobile phone. When a user answers a call, listens a voice message or other similar conditions, the mobile phone is in a receiver mode, and the receiver is enabled to sound through a moving coil loudspeaker arranged on the upper part of the mobile phone; when audio resources are played or other similar conditions are played, the mobile phone is in a loudspeaker mode, and the two-channel sounding is achieved through the two moving coil loudspeakers of the mobile phone. Therefore, the mobile phone needs to be provided with the sound outlet hole on the front side of the screen assembly, and is not suitable for the development trend of the current large-screen terminal or full-screen terminal.

In order to cooperate with a large-screen terminal or a full-screen terminal, one scheme is to sound in a receiver mode by adopting a screen sounding technology. Taking a mobile phone as an example, the piezoelectric ceramic is fixed on a mobile phone middle frame, and when the piezoelectric ceramic vibrates, the mobile phone middle frame drives the whole mobile phone including the screen assembly to vibrate and sound. However, in such a structure, not only the problems of small sound volume and poor sound quality can be caused due to the large mass and uneven mass distribution of the whole mobile phone, but also the problems of strong hand-held vibration sense, sound leakage and the like can be caused due to the vibration and sound production of the whole mobile phone. In addition, in above-mentioned two kinds of schemes, realize the binaural sound production through the moving coil speaker, can not realize more sound channel sounds such as three channels or four channels, lead to the audio effect third dimension relatively poor to user experience has been influenced.

Referring to fig. 1 and fig. 2, an embodiment of an apparatus of a terminal device is provided in the present application. Fig. 1 is an exploded perspective view of the terminal device, and fig. 2 is a cross-sectional view taken along a-a direction in fig. 1. In this embodiment, the terminal device may be an electronic device with display and sound generation functions, such as a mobile phone, a tablet computer, a television, and the like.

The terminal device of this embodiment includes: a screen assembly 101, at least one vibration source 102, a device bezel 103, a circuit board (not shown), and a back cover 107. Each component and the connection relationship between the components will be described below.

The screen component 101 refers to a component having a display function. In an alternative embodiment, the screen assembly 101 may include one or more Light Emitting modules of a Light Emitting Diode (LED) module, a Liquid Crystal Display (LCD) module, or an Organic Light Emitting Display (OLED) module. The screen assembly 101 includes a front surface, a back surface and side surfaces, wherein the front surface of the screen assembly 101 refers to a display surface of the screen assembly 101, and the back surface of the screen assembly 101 refers to a non-display surface of the screen assembly 101 opposite to the front surface. The screen assembly 101 may include a display screen and a touch screen, wherein the touch screen is fixed on a front surface of the display screen and is used for sensing a touch operation of a user, and the display screen is used for displaying a user interface.

The vibration source 102 refers to a device capable of converting electrical energy into mechanical energy, and may include one or more of the following: piezoelectric ceramics, vibration motors, and vibration exciters. Taking a piezoelectric ceramic as an example, when a driving signal is input to the piezoelectric ceramic, the piezoelectric ceramic deforms, thereby generating vibration. The vibration source 102 is installed on the back of the screen assembly 101, and when the vibration source 102 vibrates, the screen assembly 101 is driven to vibrate in a direction perpendicular to the screen assembly 101, i.e., in a z-axis direction in fig. 1. The vibration source 102 may be mounted on the back of the screen assembly through various mounting methods, for example, the vibration source 102 may be adhered to the back of the screen assembly 101, and for example, the vibration source 102 may also be mounted on the back of the screen assembly 101 through a connector such as a screw. It should be noted that the number of the vibration sources may be set according to parameters such as the area and the mass of the screen assembly, and fig. 1 and 2 take 3 vibration sources as an example, which is not limited in this application.

The terminal device further comprises a device middle frame 103, namely a frame which plays a role in connecting and supporting components in the terminal device such as the screen component 101, the circuit main board, the back cover 107 and the like. The device middle frame 103 may be an undetachable frame, or may be formed by combining a plurality of frames, which is not limited in this embodiment of the present application. The screen assembly 101 is installed on the front surface of the device middle frame 103, the circuit board is installed on the front surface of the device middle frame 103 and located between the screen assembly 101 and the device middle frame 103, and the back cover 107 is installed on the back surface of the device middle frame. Wherein, one or more moving coil loudspeakers 106 can be arranged on the back of the device middle frame.

Wherein, in order to better fix and support the screen assembly 101, the device middle frame 103 may have one or more recesses, as shown in fig. 2. The screen assembly 101 is mounted in a recess therein. Specifically, as shown in fig. 2, the recess is formed by a first part 1031 and a second part 1032 of the device middle frame 103, the side of the screen assembly 101 is connected with the first part 1031 of the device middle frame 103, and the back of the screen assembly 101 is connected with the second part 1032 of the device middle frame through a connecting member.

In the embodiment of the present application, the vibration source 102 may have a spacing distance from the device middle frame 103, that is, the vibration source 102 is not in contact with the device middle frame 103. Therefore, when the vibration source 101 vibrates, the device middle frame 103 is not driven to vibrate or the vibration intensity of the device middle frame 103 is weak, so that the terminal device is prevented from being driven to vibrate or the vibration intensity of the terminal device is prevented from being weak. In order to prevent the vibration source 102 from contacting the device middle frame 103, at least one hole 1033 may be disposed on the device middle frame 103, one end of the vibration source is mounted on the back surface of the screen assembly, and the other end of the vibration source is disposed in the hole 1033.

The following is a description of the sound generation principle of the terminal device. When a driving signal is input to the vibration source 102, the vibration source 102 can be driven to vibrate in a direction perpendicular to the screen assembly 101, i.e., in a z-axis direction in fig. 1. Because the vibration source 102 is connected with the back surface of the screen assembly 101 and is not connected with the equipment middle frame 103, the vibration source 102 can drive the screen assembly 101 to vibrate in the z-axis direction when vibrating, and the whole terminal equipment cannot be driven to vibrate by the equipment middle frame 103 or the vibration intensity of the whole terminal equipment is weak, so that the screen assembly 101 pushes surrounding air to flow, and the screen is sounded.

According to the technical scheme, in the embodiment of the application, the vibration source 102 can drive the screen assembly 101 to vibrate and sound, the terminal equipment complete machine cannot be driven to vibrate or the vibration strength of the terminal equipment complete machine is weaker, the screen assembly 101 is opposite to the terminal equipment, the quality is smaller, the quality distribution is uniform, and the problems of smaller sound production volume and poorer sound quality are solved. In addition, the whole terminal equipment cannot be driven to vibrate or the vibration intensity of the whole terminal equipment is weak, so that the problems of strong hand-held vibration sense, sound leakage and the like are solved.

In an alternative embodiment, the screen assembly 101 and the device middle frame 103 may be connected by a connection assembly. Wherein, because when screen subassembly 101 vibrates and the sound production, in order to make to avoid as far as possible driving equipment center 103 vibrates, can use the coupling assembling that has the hindrance effect to the transmission of vibration, thereby hinder screen subassembly 101 with the transmission of vibration between the equipment center 103. The following is an exemplary description of an implementation of the connection assembly.

In one implementation of the connection assembly, the connection assembly may include a stretchable adhesive 105, which may be embodied as a soft and resilient glue, through which the sides of the screen assembly are connected to the device center. The telescopic adhesive 105 can connect the screen assembly 101 and the device middle frame 103, so that the screen assembly 101 is fixed, and the transmission of the vibration of the screen assembly 101 can be hindered when the screen assembly 101 vibrates and sounds, so that the vibration of the screen assembly 101 does not drive the device middle frame 103 to vibrate or the vibration strength of the device middle frame 103 is weak. Wherein, in an alternative embodiment, the cured stretchable adhesive satisfies one or more of the following parameter requirements: a shore hardness of 25 to 30, a shear stress of 200 to 900 psi, and an elongation at break of greater than 500%.

In another implementation of the connection assembly, the connection assembly may include: a resilient support 104. The elastic support 104 is clamped between the back surface of the screen assembly 101 and the device middle frame 103, that is, one end of the elastic support 104 is connected to the back surface of the screen assembly 101, and the other end is connected to the device middle frame 103. The elastic supporting member 104 can connect the screen assembly 101 and the device middle frame 103, so as to fix and support the screen assembly 101, and can also block the transmission of the vibration of the screen assembly 101 when the screen assembly 101 vibrates and sounds, so that the vibration of the screen assembly 101 does not drive the device middle frame 103 to vibrate or the vibration strength of the device middle frame 103 is weak. Take elastic support piece 104 is the bubble cotton as an example, the bubble cotton can paste respectively through two-sided gum on the back of screen subassembly 101 and on equipment center 103, when screen subassembly 101 vibrates, the bubble cotton can hinder screen subassembly 101's vibration. Wherein, the elastic supporting element 104 such as foam is not in contact with the circuit main board. The elastic support 104 may be one or more of a spring, a rubber support, and an elastic rubber band support, besides foam, which is not limited in the embodiments of the present application.

In the embodiment of the present invention, the screen assembly 101 may also be connected to the device middle frame 103 through the stretchable adhesive 105 and the elastic support 104, or may also be connected to the device middle frame 103 through another connecting component, which is not limited in the embodiment of the present invention.

In an alternative embodiment, the vibration source 102 may vibrate under the driving of the driving circuit. Specifically, the device terminal further includes: a driving circuit for driving the vibration source 102, for example, the driving circuit generates a driving signal and outputs the driving signal to the vibration source 102, and the vibration source 102 vibrates according to the driving signal. As shown in fig. 3, the driving circuit may include a processor 301, an audio codec 302, and a power amplifier 303, where the processor 301 performs signal processing on an audio to be played to obtain a digital signal, outputs the digital signal to the audio codec 302 for digital-to-analog conversion to obtain an analog signal, outputs the analog signal to the power amplifier 303 for power amplification to obtain the driving signal, and drives the vibration source 102. Wherein, the codec 302 may also be replaced by a digital-to-analog converter. The processor 301 may be an Advanced reduced instruction set computer Machine (ARM) processor or a System on Chip (SoC) such as a Digital Signal Processing (DSP) processor, and the power amplifier 303 may be an intelligent power amplifier (Smart PA) or a high voltage power amplifier.

The driving Circuit may be connected to the vibration source 102 through a Flexible connector, for example, the driving Circuit may be connected to the vibration source 102 through a Flexible Printed Circuit (FPC) connector, a Board To Board (BTB) connector or a spring plate, and for example, the driving Circuit may be connected to the vibration source 102 through a flying wire welding method.

Method embodiments of screen-sound methods are provided below.

Referring to fig. 4, an embodiment of the present application provides a method embodiment of a screen sound generating method, which may be used in any one of the above device embodiments, and may also be used in other terminal devices.

The embodiment comprises the following steps:

401: the drive circuit generates a first drive signal.

In the embodiment of the application, the first driving signal is used for driving the vibration source to vibrate. Taking the terminal device shown in fig. 1 as an example, the driving circuit generates a first driving signal for driving the vibration source 102 to vibrate in a direction perpendicular to the screen assembly 101.

402: the driving circuit sends the first driving signal to a vibration source to drive the vibration source to vibrate.

In an embodiment of the present application, the vibration source is capable of converting electrical energy into mechanical energy, and may include one or more of the following: piezoelectric ceramics, vibration motors, and vibration exciters. Taking the piezoelectric ceramic as an example, after the driving circuit inputs the first driving signal to the piezoelectric ceramic, the piezoelectric ceramic deforms, so as to generate vibration.

403: the vibration source drives the screen assembly to vibrate and sound in the direction perpendicular to the screen assembly.

In this application embodiment, during the vibration source vibration, can drive with the vibration source is connected the screen subassembly is in the perpendicular to the direction of screen subassembly is gone up vibration and sound production. As shown in fig. 1 and fig. 2, the vibration source may be installed on the back of the screen assembly and is not in contact with the device middle frame of the terminal device, for which reference is specifically made to relevant contents of the embodiment corresponding to fig. 1 and fig. 2, which is not described herein again.

The following explains the sound emission principle of the screen sound emission method. After the first driving signal is input to the vibration source, the vibration source can be driven to vibrate in the direction perpendicular to the screen assembly, and when the screen assembly vibrates, the surrounding air can be pushed to flow, so that the screen can sound.

According to the technical scheme, in the embodiment of the application, the vibration source can drive the screen assembly vibrates and produces sound, and can not drive the terminal equipment vibrates or the vibration intensity of the terminal equipment is weaker, so that a sound hole is not required to be arranged in the front, a full screen can be realized, and the screen assembly is uniform in quality and quality distribution of the terminal equipment, and the problems of smaller sound production volume and poorer sound quality are solved. In addition, the terminal equipment cannot be driven to vibrate or the vibration strength of the terminal equipment is weak, so that the problems of strong hand-held vibration sense, sound leakage and the like are solved.

Wherein the terminal device typically has two sound emission modes: an earpiece mode and a speaker mode, and sound emission methods of these two sound emission modes will be specifically described below.

When the terminal device is in the handset mode, for example, when a user answers a call, listens to a voice message, or the like, the terminal device may implement a screen sound production through the above method embodiment. For example, taking the terminal device shown in fig. 1 as an example, when the terminal device is in the earpiece mode, the driving circuit outputs a first driving signal to the vibration source 102, and the vibration source 102 drives the screen assembly 101 to vibrate to generate sound.

When the terminal device is in a speaker mode, for example, when the terminal device plays an audio resource or the like, the terminal device may implement a screen sound production by the method embodiment of the screen sound production method, or may implement a sound production by a moving coil speaker of the terminal device, or may implement a multi-channel sound production by combining the method embodiment of the screen sound production method and the moving coil speaker, for example, implement a mono or multi-channel sound production by the moving coil speaker, and implement a mono or multi-channel sound production by the screen sound production at the same time. Method embodiments incorporating screen sound production methods and multi-channel sound production implementations of moving coil speakers are specifically described below.

Referring to fig. 5, an embodiment of the present application provides another method embodiment of a screen sound generating method, which may be used in any one of the above device embodiments, and may also be used in other terminal devices.

The embodiment comprises the following steps:

501: the driving circuit obtains single-channel or multi-channel first audio data, generates a second driving signal according to the first audio data, and sends the second driving signal to one or more moving coil loudspeakers to drive the moving coil loudspeakers to sound.

When the terminal device is in the speaker mode, the driving circuit may perform signal processing on the audio to be played to obtain single-channel or multi-channel first audio data, for example, obtain audio data of a left channel and a right channel as the first audio data.

The following description will be given taking the driving circuit shown in fig. 6 as an example. Compared with the driving circuit shown in fig. 3, the driving circuit shown in fig. 6 further includes a power amplifier 601 and a power amplifier 602. The processor 301 obtains the audio to be played in the speaker mode, and performs signal processing on the audio to be played, such as filtering, gain adjustment, and the like, to obtain a digital signal of a left channel and a digital signal of a right channel, the processor 301 sends the digital signal of the left channel and the digital signal of the right channel to the audio codec 302 for digital-to-analog conversion, obtains an analog signal of the left channel and an analog signal of the right channel, sends the analog signal of the left channel to the power amplifier 601, obtains a driving signal of the left channel, and sends the driving signal of the left channel to the moving coil speaker 603 to drive the moving coil speaker 603 to sound, and a user hears the sound of the left channel. The audio codec 302 sends the analog signal of the right channel to the power amplifier 602, obtains a driving signal of the right channel, and sends the driving signal of the right channel to the moving coil speaker 604 to drive the moving coil speaker 604 to sound, so that the user hears the sound of the right channel. In order to enable the moving coil speaker 603 and the moving coil speaker 604 to generate sound well, sound holes may be respectively formed in the bottom side and the top side of the terminal device.

502: the driving circuit obtains second audio data of single track or multiple tracks, and generates the first driving signal according to the second audio data.

When the terminal device is in the speaker mode, the signal processing may be performed on the audio to be played to obtain second audio data of a single channel or multiple channels. The first audio data and the second audio data may be audio data of different channels corresponding to the same audio to be played, for example, audio such as soundtrack and human voice in a certain movie is subjected to signal processing to obtain audio data of a left channel and a right channel and audio data of a center channel, where the audio data of the left channel and the right channel is used as the first audio data and the audio data of the center channel is used as the second audio data. The following description will be made by taking the driving circuit shown in fig. 6 as an example. After the processor 301 performs signal processing on the audio to be played, besides the digital signal of the left channel and the digital signal of the right channel, the processor also obtains the digital signal of the center channel, sends the digital signal of the center channel to the audio codec 302 and the power amplifier 303, obtains a driving signal of the center channel, and sends the driving signal of the center channel to the vibration source to drive the vibration source to vibrate, so as to drive the screen assembly to vibrate and sound, and the user hears the sound of the center channel. When the processor 301 performs signal processing on the audio to be played, the signal processing may be performed according to an Equalizer (EQ) curve of the audio to be played, so as to achieve a better sound effect.

According to the technical scheme, in the embodiment, single-channel or multi-channel sound production can be realized through one or more moving coil speakers in a speaker mode or other modes, and different single-channel or multi-channel sound production can be realized through the screen assembly when the same audio data is played, so that multi-channel sound production is realized, for example, three-channel or four-channel sound production can be realized, and the stereoscopic impression of sound effect is enhanced. In a concrete application scene, realize left channel and right channel sound production respectively through two moving coil speakers, put the channel sound production in realizing through the screen pack, can strengthen the audio of people's voice part for the user has better audio and experiences.

In the embodiment of the present application, sound production of more sound channels can be realized by external devices such as a packaging box, which is described in detail below. When the terminal equipment is judged to be connected with external equipment such as a packaging box, the audio data of a single channel or multiple channels can be sent to a moving coil loudspeaker and/or a vibration source in the external equipment such as the packaging box by the terminal equipment, so that sound production of more channels is realized.

As shown in fig. 6, after the processor 301 determines that the type C interface has an external device such as a package, the processor 605 sends the third audio data of the single channel or multiple channels to the external device, and after receiving the third audio data, the processor 605 in the external device sends the third audio data to the digital-to-analog converter 606 and the power amplifier 607 to obtain a third driving signal, and sends the third driving signal to the vibration source 608 to drive the vibration source 608 to vibrate, and the vibration source 608 drives the external device to vibrate to generate sound. The first audio data, the second audio data, and the third audio data may be audio data corresponding to different channels, for example, the first audio data is audio data of a middle-high sound part of a left channel and a right channel of a movie, the second audio data is audio data of a middle-low sound channel, and the third audio data is audio data of a middle-low sound channel. Therefore, sound production of more sound channels can be realized through external equipment such as a packaging box, the stereoscopic impression of sound effect is further enhanced, and user experience is increased.

An embodiment of a sound generation method is described below with reference to a specific application scenario.

Referring to fig. 7, an embodiment of a method for generating a sound is provided in the present application, and the present application is described with reference to a mobile phone as an example.

The mobile phone comprises a touch screen, a display screen, one or more vibration sources, a circuit main board, a mobile phone middle frame, two moving coil loudspeakers and a back cover in sequence from the front to the back.

The middle frame of the mobile phone plays a role in fixing and supporting the touch screen, the display screen, the circuit main board, the two moving coil loudspeakers and the back cover. The middle frame of the mobile phone can be an integrated frame, and can also be a detachable frame formed by a plurality of frames through connecting pieces such as screws and the like. The material of the mobile phone middle frame can be aluminum alloy, stainless steel, steel-aluminum composite material, titanium alloy and other metal materials. The connection relationship between other components and the middle frame of the mobile phone is described in detail below.

The front side of the middle frame of the mobile phone is provided with the display screen and the touch screen, wherein the touch screen is fixed on the front side of the display screen, the touch screen can sense the touch operation of a user, and the display screen can be an OLED module and is used for displaying one or more user interfaces. For example, a user interface with a volume adjustment button is displayed on the display screen, after a user performs a sliding operation on the adjustment button on the touch screen, the circuit board detects a sliding event, determines a magnitude value and a direction of volume adjustment according to a position change corresponding to the sliding event, and adjusts the volume of a sound according to the magnitude value and the direction. The front surface of the touch screen can be further provided with a layer of glass, and sound holes do not need to be formed in the glass, so that the full-face screen is realized. The full screen refers to a screen with a high screen occupation ratio, and can be a full screen as shown in fig. 7, or a bang screen or a central hollowed full screen with a special shape. Fig. 7 is a front view and left and right side views of the cellular phone, and in fig. 7, the cellular phone includes a full-face screen 701 and no sound output hole is provided in the front face of the cellular phone.

The side of touch-sensitive screen and the side of display screen can paste on the cell-phone center through the point of whole circle of point, can play dustproof and waterproof effect, and the back of display screen can paste in the front of cell-phone center through the bubble cotton of taking two-sided gum, plays support and fixed action to display screen and touch-sensitive screen. The glue can be soft and elastic, for example, meet the following parameter requirements: the shore hardness is 25-30, the shear stress is 200-900 psi, the elongation at break is more than 500%, and the display screen is connected with the mobile phone middle frame through soft foam, so when the touch screen and the display screen vibrate back and forth in the vertical direction, not only can the elastic support during the back and forth vibration be provided through the foam, but also the vibration is not transmitted through the dispensing and the foam, and the vibration sense of the mobile phone middle frame is reduced. The connection mode of the glue dispensing and the foam can be seen, so that the display screen and the touch screen are like loudspeaker vibrating membranes and can linearly vibrate back and forth in the vertical direction. In order to reduce the shaking of the display screen and the touch screen and enhance the stability of the mobile phone screen, dispensing with high hardness can be adopted, or a supporting piece with high hardness is used for replacing foam.

One end of one or more vibration sources is adhered to the back of the display screen, and the other end of the vibration sources is arranged in a hole formed in the middle frame of the mobile phone, so that the thickness of the mobile phone is reduced, and the light and thin design is realized. The vibration source can vibrate under the drive of the drive circuit on the circuit main board, and drives the display screen and the touch screen to vibrate in the direction perpendicular to the display screen and the touch screen, so that the surrounding air is pushed to realize screen sounding. The drive circuit can be connected with the FPC connector, and the FPC connector passes through BTB connector or shell fragment and connects the vibration source, and this kind of flexible connection mode also can play the effect of not transmitting the vibration. The Circuit main Board can be a Printed Circuit Board (PCB for short), is used for realizing functions of communication, display and the like of the mobile phone, is installed and fixed on the front surface of the middle frame of the mobile phone, and is not in contact with the vibration source, the foam and the display screen. The specific structure of the driving circuit can be as shown in fig. 6, and is not described herein again.

Two traditional moving coil speakers can be installed on the back of the middle frame of the mobile phone, multi-channel sound production is supported in a speaker mode, and in order to assist the moving coil speakers to produce sound, two rows of sound holes can be respectively arranged on the side faces of the mobile phone, for example, the top side face 91 and the bottom side face 92 of the mobile phone shown in fig. 9, one row of sound holes 911 can be arranged on the top side face of the mobile phone, a sound guide channel is arranged between the discharge sound hole 911 and one moving coil speaker, the other row of sound holes 912 can be arranged on the bottom side face of the mobile phone, and a sound guide channel is also arranged between the discharge sound hole 912 and the other moving coil speaker. Wherein, these two moving coil speakers can be under the drive of drive circuit on the circuit mainboard, convert the electric energy into mechanical energy, consequently realize the vibration of speaker vibrating diaphragm, push out the air from going out the sound hole through leading the sound passageway, realize the sound production.

The back of the middle frame of the mobile phone can be connected with a back cover, so that the mobile phone is protected from dust, water and falling. As shown in the back view of the mobile phone in fig. 8, the back cover may be provided with a plurality of holes, and the dual cameras 801 and the flashlight 802 of the mobile phone are installed at the plurality of holes.

Therefore, in the embodiment, the screen can be sounded by the vibration source adhered to the back of the display screen, and the sounding can also be realized by the traditional moving coil loudspeaker. Wherein, the sound production principle of screen sound production does: the driving circuit drives the vibration source adhered to the back of the display screen to vibrate, and the display screen and the touch screen are driven to vibrate in the vertical direction when the vibration source vibrates, so that surrounding air is pushed, and the screen can sound. The visible screen mode can realize a full-screen without arranging sound holes on the front side, and the vibration cannot be transmitted to the middle frame of the mobile phone through soft adhesive dispensing and foam on the back side of the display screen when the display screen and the touch screen vibrate, so that the middle frame of the mobile phone is prevented from driving the whole mobile phone to vibrate, and the screen has the effects of larger sound volume of screen sounding, better sounding tone quality, weaker hand-holding vibration sense and less sound leakage. The sound production principle of the sound production of the moving coil loudspeaker is as follows: the driving circuit drives the vibrating diaphragm of the moving coil loudspeaker to vibrate, and air is pushed out from the sound outlet hole through the sound guide channel, so that sound production is realized.

The following describes the sound production method of the mobile phone in this embodiment in different scenarios.

When the user answers the phone or listens to a voice message, the user can make a sound in the earphone mode through the screen sound, or can make a sound in the speaker mode through the moving coil speaker, which is described in detail below. When a user answers a call, the circuit main board detects a call event and further detects whether the earphone is connected or not, if so, the earphone sounds, and if not, the earphone mode is set. In the earphone mode, a communication module of a circuit main board receives voice and other audio data transmitted by a call opposite terminal, a processor 301 in a driving circuit acquires the audio data, performs signal processing such as filtering on the audio data, and outputs the audio data to an audio decoder 302 for digital-to-analog conversion to obtain an analog signal, the analog signal is amplified by a power amplifier 303 and then output to a vibration source, and the vibration source drives a touch screen and a display screen to vibrate to make sound. The user can hear the voice transmitted from the opposite end of the call by placing the ear near the touch screen and the display screen.

The user can switch the receiver mode into the loudspeaker mode in the conversation process by touching the touch screen. Specifically, during a call of a user, a hands-free button is displayed on the display screen, after the user performs a click operation on the hands-free button on the touch screen, the circuit board detects a switching event, the earphone mode is switched to the speaker mode, at this time, the driving circuit stops driving the vibration source, that is, the audio codec 302 no longer sends the generated analog signal to the power amplifier 303, the display screen and the touch screen stop vibrating and sounding, and the driving circuit sends a driving signal to one or two moving coil speakers to drive the one or two moving coil speakers to vibrate and sound. The user can hear the voice transmitted from the opposite end of the call without placing the ear near the touch screen and the display screen. When the call is finished, the driving circuit stops driving the moving coil loudspeaker, and the moving coil loudspeaker stops vibrating and sounding.

The sound production process when the user listens to the voice message is similar to the sound production process when the user listens to the phone. When a user listens to a voice message, the circuit main board can detect whether the user places ears near a receiver, if yes, the circuit main board is set to be in a receiver mode and sounds through a vibration source, and if not, the circuit main board is set to be in a loudspeaker mode and sounds through a moving coil loudspeaker.

When a user wants to play audio data such as movies and songs through a mobile phone, a playing button displayed on a display screen can be clicked through a touch screen, a circuit mainboard detects a playing event, and a driving circuit drives a vibration source and a moving coil loudspeaker to realize multi-channel sounding to generate a stereoscopic sound effect. The following describes a specific implementation of multi-channel sounding.

When a playing event is detected, the processor 301 of the driving circuit reads a movie and a song to be played from a memory of the mobile phone, or obtains an online movie and song to be played according to an audio address, where the audio to be played may be dual-channel or multi-channel audio data, the processor 301 extracts audio data of a left channel, audio data of a right channel, and audio data of a center channel from the processed audio to be played after performing signal processing such as filtering, gain equalization, and the like, outputs the 3 channels of audio data to the audio decoder 302 for digital-to-analog conversion to obtain an analog signal of the left channel, an analog signal of the right center channel, and an analog signal of the channels, and outputs the analog signal of the left channel and the analog signal of the right channel to the two moving coil speakers through the power amplifier 601 and the power amplifier 602 respectively, the two moving coil loudspeakers are driven to sound, so that the sound of the left sound channel and the sound of the right sound channel in the movie and the song are played to the user, the audio decoder 302 outputs the analog signal of the middle sound channel to the vibration source to drive the vibration source to vibrate, and the vibration source drives the touch screen and the display screen to vibrate and sound, so that the sound of the middle sound channel in the movie and the song, namely the sound of the human voice part, is played to the user.

Therefore, in the embodiment, the screen sounding realized by the vibration source is used not only in the conversation process, but also as an auxiliary audio playing mode when movies, songs and the like are played, a forward impact sound field is increased, a more surrounding and immersive stereo sound effect experience is caused, and the hearing and visual experience of a user are improved by matching with the design of a full screen. In addition, the sound production of the center sound channel is realized through the screen sound production, and the sound effect of the human voice part in the movies and the music can be enhanced.

Can also realize the fourth sound channel sound production through external cell-phone packing carton in this embodiment. A vibration source is mounted on the mobile phone packaging box to form a low-cost paper box loudspeaker. For example, the mobile phone packaging box comprises a box cover and a box bottom, the box cover can be buckled on the back of the box bottom in a reverse mode, a mobile phone mounting groove is formed in the front of the box bottom and used for fixing a mobile phone, and a vibration source is adhered to the back of the box bottom. When the processor 301 detects that the mobile phone packaging box is externally connected through the type C interface, audio data of a fourth sound channel except for a left sound channel, a right sound channel and a middle sound channel are extracted from audio to be played, the audio data of the fourth sound channel are output to the processor on the mobile phone packaging box, the processor on the mobile phone packaging box receives the audio data and performs simple signal processing, the processed audio data sequentially pass through the digital-to-analog converter and the power amplifier and are output to the vibrator on the mobile phone packaging box, so that the vibrator on the mobile phone packaging box is driven to vibrate, and a driver on the mobile phone packaging box drives the box bottom of the mobile phone packaging box to vibrate and generate sound when vibrating. The left sound channel and the right sound channel can be high-pitched parts of the left sound channel and the right sound channel, and the fourth sound channel can be a medium-low sound channel, so that the box bottom of the mobile phone packaging box vibrates and sounds, the sound of the medium-low sound channel in movies and songs can be played for a user, and the stereo sound effect is further enhanced.

In this embodiment, the auditory effect of the mobile phone can also be set. In one possible design, the user selects the setting icon, the general option, and the auxiliary function option of the mobile phone in sequence through the touch screen, wherein the auxiliary function option provides multiple adjusting functions. For example, as shown in fig. 10, a switch for monaural audio and a switch for screen sounding are provided in the auxiliary function option, and a user can turn on and off the monaural playing function by operating the switch for monaural audio, and at this time, the vibration source and the two moving coil speakers both realize monaural sounding, and the user can also turn on and off the screen sounding function in the speaker mode by operating the switch for screen sounding. As shown in fig. 10, a volume adjusting lever for the screen sound may be further provided in the auxiliary function option, and the user may slide an adjusting button on the adjusting lever to adjust the volume of the screen sound, for example, the user turns the volume of the screen sound larger to highlight the sound effect of the human voice when playing a movie. In addition, each channel switch and a volume adjusting rod of each channel can be provided in the auxiliary function option, for example, a switch of the center channel and a volume adjusting rod of the center channel are provided, and a user can turn on and off the play function of the center channel by operating the switch of the center channel, and slide an adjusting button on the adjusting rod of the center channel to adjust the volume of the center channel. In another possible design, the user may also adjust the sound effects through various applications with sound adjustment functions. For example, on the interface of the application program, the user may start the equalization button to perform equalization processing on the sound of each channel, or may start the human voice enhancement button to increase the volume of the center channel or perform sound effect processing such as echo addition on the sound of the center channel, and may also perform processing such as background sound removal and bass sound effect enhancement through the application program, which is not listed here.

The present application also provides a computer-readable storage medium comprising computer instructions that, when executed by a processor of a terminal device, enable the terminal device to perform some or all of the steps of any of the above-described method embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that is integrated with one or more available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

In the description of the present application, "/" indicates an OR meaning, for example, A/B may indicate A or B; in the present application, "and/or" is only an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the present application, "a plurality" means two or more than two.

The terms "first," "second," "third," or "fourth," and the like in the description and in the claims of the present application and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

A terminal device, comprising: the device comprises a screen assembly, at least one vibration source, a device middle frame, a circuit main board and a back cover;

wherein the screen assembly is installed on the front surface of the equipment middle frame, the circuit main board is installed on the front surface of the equipment middle frame and is positioned between the screen assembly and the equipment middle frame, and the back cover is installed on the back surface of the equipment middle frame; the vibration source is installed the back of screen subassembly, the vibration source is used for driving the screen subassembly is in the perpendicular to the direction of screen subassembly vibrates and the sound production.
The apparatus of claim 1,

the screen assembly with the equipment center is connected through coupling assembling, coupling assembling is used for hindering the transmission of vibration between the screen assembly with the equipment center.
The apparatus of claim 2, wherein the connection assembly comprises: a stretchable adhesive; the side face of the screen component is connected with the equipment middle frame through the telescopic adhesive.
The apparatus of claim 2 or 3, wherein the connection assembly comprises: an elastic support member;

the elastic support is clamped between the back surface of the screen assembly and the equipment middle frame.
The apparatus of claim 4, wherein the resilient support comprises one or more of:

foam, spring, rubber support piece, and elasticity rubber band support piece.
The apparatus according to any one of claims 1 to 5, wherein the apparatus middle frame is provided with at least one hole, one end of the vibration source is mounted on the back surface of the screen assembly, and the other end is placed in the hole.
The apparatus of any of claims 1 to 6, wherein the circuit board comprises: a drive circuit;

the driving circuit is connected with the vibration source through a flexible connector.
The apparatus of any one of claims 1 to 7, wherein the vibration source comprises one or more of: piezoelectric ceramics, vibration motors, and vibration exciters.
A method of on-screen sound generation, the method comprising:

the driving circuit generates a first driving signal;

the driving circuit sends the first driving signal to a vibration source to drive the vibration source to vibrate;

the vibration source drives the screen assembly to vibrate and sound in the direction perpendicular to the screen assembly.
The method of claim 9, further comprising: the driving circuit obtains single-channel or multi-channel first audio data, generates a second driving signal according to the first audio data, and sends the second driving signal to one or more moving coil loudspeakers to drive the moving coil loudspeakers to sound;

the drive circuit generates a first drive signal comprising: the driving circuit obtains second audio data of single track or multiple tracks, and generates the first driving signal according to the second audio data.
A computer storage medium comprising computer instructions which, when run on a terminal device, cause the terminal device to perform the screen sound emission method of any one of claims 1 to 8.
A computer program product, which, when run on a computer, causes the computer to perform the screen sound production method of any one of claims 1 to 8.